One of the first studies into viral communication shows that viruses that infect bacteria (phages) leave chemical messages for each other which help them decide whether to kill or linger. Disrupting these messages could provide a new way to control HIV.

A once-a-week injection that can offer ‘complete viral-load suppression’ for up to 17 months, could be available from 2017 according to Pharmaceutical company CytoDyn Inc. following a trial of 23 patients.